I had the TV360 connected to my TV and the sound connected from the TV to my Sony amp using optical cable, it was connected like this because the Samsung TV had adjustable audio delay, the Sony is sync on or off only, this is how it was connected to the Tivo V6 and worked OK.
To cure the sync problem with the 360 box I connected the 360 to the Sony amp just using HDMI no optical cable, and then Sony amp to TV. Settings are follow content and 0 delay on the 360 and on the Sony amp sync set to on.
This seems to working for me, hope you get your system sorted out.
Thanks for your input. Can I ask how you connected the TV to the sound-bar i.e. via optical ? I am at a bit of a loss on that part of your suggestion..
Currently config is HDMI from 360 to TV and HDMI from TV to sound-bar . I have an optical cable but not currently connected.. When I connected the TV to sound-bar via the optical cable as suggested by Virgin's technical people the audio was very distorted.
Video and audio through the HDMI cable into the Sony SAT input from the HDMI out on the 360, video then through the HDMI TV out on the Sony into the TV. My Sony has HDMI inputs for Satellite, DVD and Blu Ray, with the output to the TV through HDMI. It also has an input for optical but at the moment I have not connected that to the 360.
I guess it depends on what connections you have available.